| 北黄海沉积物中氮的地球化学特征及其早期成岩作用 |
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| 引用本文： | 吕晓霞,宋金明,李学刚,袁华茂,詹天荣,李宁,高学鲁.北黄海沉积物中氮的地球化学特征及其早期成岩作用[J].地质学报,2005,79(1):114-123. |
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| 作者姓名： | 吕晓霞 宋金明 李学刚 袁华茂 詹天荣 李宁 高学鲁 |
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| 作者单位： | 中国科学院海洋研究所海洋生态与环境科学重点实验室,青岛,266071;中国海洋大学地球科学学院,青岛,266003;中国科学院海洋研究所海洋生态与环境科学重点实验室,青岛,266071;中国科学院海洋研究所海洋生态与环境科学重点实验室,青岛,266071;中国科学院研究生院,北京,100039 |
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| 基金项目： | 国家杰出青年科学基金项目 (编号 4992 5 614 )，中国科学院创新重大项目 (编号 KZCX1-SW-0 1-0 8)资助成果 |
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| 摘 要： | 本文首次报道对北黄海沉积物中氮的形态及其早期成岩作用的研究成果。结果表明 ,北黄海沉积物中占主导地位的是细粒度组分 ,其结构和性质直接影响着沉积物中化学元素的形态、含量与分布 ,使自然粒度沉积物中各形态氮的垂向分布与细粒度组分中各形态氮的分布非常相近。在氮的早期成岩过程中 ,粒度也起着非常重要的作用 ,沉积物的粒度越细 ,沉积物中有机氮的分解速率越小 ,即细粒度沉积物中有机氮的分解矿化速率最小 ,易于富集有机氮。对于不同站位的沉积物来说 ,因其沉积速率的差异 ,致使沉积物中各形态氮的埋藏通量有很大差异 ,沉积速率越大 ,沉积物中各形态氮的埋藏通量越大 ,在沉积速率最大的 C4站位 ,各形态氮的埋藏通量最大。
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| 关 键 词： | 氮 地球化学特征 早期成岩作用 北黄海沉积物 |
| 修稿时间： | 2003年11月21 |
Geochemical Characteristics and Early Diagenesis of Nitrogen in the Northern Yellow Sea Sediments |
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| LU Xiaoxi,SONG Jinming ,LI Xuegang,YUAN Huamao,ZHAN Tianrong, LI Ning,GAO Xuelu, Institute of Oceanology,Chinese Academy of Sciences,Qingdao, Marine Geology College,Ocean University of Chin.Geochemical Characteristics and Early Diagenesis of Nitrogen in the Northern Yellow Sea Sediments[J].Acta Geologica Sinica,2005,79(1):114-123. |
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| Authors: | LU Xiaoxi SONG Jinming LI Xuegang YUAN Huamao ZHAN Tianrong LI Ning GAO Xuelu Institute of Oceanology Chinese Academy of Sciences Qingdao Marine Geology College Ocean University of Chin |
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| Institution: | LU Xiaoxi,SONG Jinming ,LI Xuegang,YUAN Huamao,ZHAN Tianrong, LI Ning,GAO Xuelu, Institute of Oceanology,Chinese Academy of Sciences,Qingdao, Marine Geology College,Ocean University of Chin |
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| Abstract: | Fine-grained components are the predominant composition in the research area in the northern Yellow Sea core sediment, amounting averagely to 87.03% of natural sediments, and directly affect the form, content and distribution of nitrogen in natural sediments, so that the vertical distribution of nitrogen in natural sediments is similar to that in fine sediments. The grain size of sediments has an important role in the early diagenesis of nitrogen. The finer the sediments are, the smaller the decomposition rate of organic nitrogen will be, i.e., organism was easily enriched in fine-grained sediments. The burial fluxes of various forms of nitrogen are different because of the varying sedimentation rates in different sampling stations. The higher the sedimentation rate is, the grater the burial flux of nitrogen will be. The burial fluxes of various forms of nitrogen are the highest in station C4 where the sedimentation rate is the highest. |
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| Keywords: | nitrogen geochemical characteristics early diagenesis northern Yellow Sea sediment |
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